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comparison src/share/vm/oops/fieldStreams.hpp @ 12264:b2e698d2276c

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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation Summary: Enhance method resolution and resulting data structures, plus some refactoring. Reviewed-by: twisti, acorn, jrose
author drchase
date Fri, 13 Sep 2013 22:38:02 -0400
parents 4a916f2ce331
children
comparison
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12261:2c98370f2611 12264:b2e698d2276c
1 /* 1 /*
2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
25 #ifndef SHARE_VM_OOPS_FIELDSTREAMS_HPP 25 #ifndef SHARE_VM_OOPS_FIELDSTREAMS_HPP
26 #define SHARE_VM_OOPS_FIELDSTREAMS_HPP 26 #define SHARE_VM_OOPS_FIELDSTREAMS_HPP
27 27
28 #include "oops/instanceKlass.hpp" 28 #include "oops/instanceKlass.hpp"
29 #include "oops/fieldInfo.hpp" 29 #include "oops/fieldInfo.hpp"
30 #include "runtime/fieldDescriptor.hpp"
30 31
31 // The is the base class for iteration over the fields array 32 // The is the base class for iteration over the fields array
32 // describing the declared fields in the class. Several subclasses 33 // describing the declared fields in the class. Several subclasses
33 // are provided depending on the kind of iteration required. The 34 // are provided depending on the kind of iteration required. The
34 // JavaFieldStream is for iterating over regular Java fields and it 35 // JavaFieldStream is for iterating over regular Java fields and it
41 Array<u2>* _fields; 42 Array<u2>* _fields;
42 constantPoolHandle _constants; 43 constantPoolHandle _constants;
43 int _index; 44 int _index;
44 int _limit; 45 int _limit;
45 int _generic_signature_slot; 46 int _generic_signature_slot;
47 fieldDescriptor _fd_buf;
46 48
47 FieldInfo* field() const { return FieldInfo::from_field_array(_fields, _index); } 49 FieldInfo* field() const { return FieldInfo::from_field_array(_fields, _index); }
50 InstanceKlass* field_holder() const { return _constants->pool_holder(); }
48 51
49 int init_generic_signature_start_slot() { 52 int init_generic_signature_start_slot() {
50 int length = _fields->length(); 53 int length = _fields->length();
51 int num_fields = 0; 54 int num_fields = 0;
52 int skipped_generic_signature_slots = 0; 55 int skipped_generic_signature_slots = 0;
100 _fields = klass->fields(); 103 _fields = klass->fields();
101 _constants = klass->constants(); 104 _constants = klass->constants();
102 _index = 0; 105 _index = 0;
103 _limit = klass->java_fields_count(); 106 _limit = klass->java_fields_count();
104 init_generic_signature_start_slot(); 107 init_generic_signature_start_slot();
108 assert(klass == field_holder(), "");
105 } 109 }
106 FieldStreamBase(instanceKlassHandle klass) { 110 FieldStreamBase(instanceKlassHandle klass) {
107 _fields = klass->fields(); 111 _fields = klass->fields();
108 _constants = klass->constants(); 112 _constants = klass->constants();
109 _index = 0; 113 _index = 0;
110 _limit = klass->java_fields_count(); 114 _limit = klass->java_fields_count();
111 init_generic_signature_start_slot(); 115 init_generic_signature_start_slot();
116 assert(klass == field_holder(), "");
112 } 117 }
113 118
114 // accessors 119 // accessors
115 int index() const { return _index; } 120 int index() const { return _index; }
116 121
178 183
179 int contended_group() const { 184 int contended_group() const {
180 return field()->contended_group(); 185 return field()->contended_group();
181 } 186 }
182 187
188 // bridge to a heavier API:
189 fieldDescriptor& field_descriptor() const {
190 fieldDescriptor& field = const_cast<fieldDescriptor&>(_fd_buf);
191 field.reinitialize(field_holder(), _index);
192 return field;
193 }
183 }; 194 };
184 195
185 // Iterate over only the internal fields 196 // Iterate over only the internal fields
186 class JavaFieldStream : public FieldStreamBase { 197 class JavaFieldStream : public FieldStreamBase {
187 public: 198 public: